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- Men’s Running Long Sleeve Base Layer - Black









Men’s Running Long Sleeve Base Layer - Black
Base layer. Built differently. The Men’s Long Sleeve Running Base Layer combines seamless comfort with lightweight warmth and breathability. Built-in mitts provide extra coverage for your hands when the temperature drops, keeping you warm without overheating.
Complete the set:
Features & Product care
- Chafe-free running, guaranteed
- Hand-warming mitts, convenience at your fingertips
- Dynamic heat control, run warm without overheating
- Flexible fit, ultimate comfort on its own or under a top
- Seamless design, no side seams or labels and reduced waste
- Moisture-wicking, removes sweat from your skin quickly
Fabric Composition:
- 92% polyamide, 8% elastane
Product Care:
- Warm machine wash up to 40°C
- Wash with similar colours
- Do not tumble dry
- Do not soak, bleach or dry clean

Base layer. Built differently. The Men’s Long Sleeve Running Base Layer combines seamless comfort with lightweight warmth and breathability. Built-in mitts provide extra coverage for your hands when the temperature drops, keeping you warm without overheating.
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This product is rated 4.8 of 5.0 stars.
It has received 156 reviews.
- 5 stars: 141 (90%)
- 4 stars: 9 (6%)
- 3 stars: 3 (2%)
- 2 stars: 2 (1%)
- 1 star: 1 (1%)
Super comfy to wear whilst out on a cold morning run. Only issue is with sizing on website not matching actual sizing on packaging (see attached pictures), ended up buying too small a size and had to return for the next size up. Exchanged without fuss.
Nice bobbly bits and bits on sleeves to tuck your hands in on a chilly parkrun morning
Feels really soft on your skin and great to run in. I got a large long sleeve as i don’t like my top too tight fitting.
Hello Andrew,
Thank you for your feedback, We are pleased to hear that you are happy with your Runderwear Base Layer and you love how soft it feels when on ☺️
I've got two of these, they are warm and the material is nice and soft. I don't use the hand covers as prefer to wear gloves but imagine they could be pretty useful.
My only gripe is that it feels as if after numerous washes the body was shrunk a little so doesn't tuck into my bottoms as well as they did originally. Which is a bit of a pain as generally only waer when trying to wrap up warm.
Hey Matt,
Thank you for your feedback, Great to hear that you love how soft and comfortable the material of the Base Layer feels on.
We have not had this feedback so will be sure to pass this onto the product team to test. I would just recommend the Base Layer is not tumble dried and washed up to 40°C.
If you have any queries please do reach out at hello@runderwear.com and we will be happy to help
I’m surprised at the good reviews on this item. Maybe I received a ‘duff’ version (it was in a clearance sale advising no returns). I have the top to be a very poor fit, oddly bunched up at various points below the pec level, as though parts of it have been shrunk. Quite uncomfortable to wear, although pretty warm for a base layer. Can’t recommend.
Fab compression, super comfortable and keeps you warm .
Worn once so far on an early morning run.
Fits well, light weight but warm and moves with you.
I like the built in hand mitts too,
Bought in the sale so a bargain.
I have runderwear compression socks too and love those so made sense to try this top.
Very happy & fully recommend.
Fabric is good quality and sizing is accurate
Looks ok, but will need a frosty morning to try it.
Another fantastic product from Runderwear. Purchased this on offer but would pay full price. Lovely material which gives a tight yet comfortable fit. Never seen it before but cuffs have a section of material which can loop over your hand instead of potentially a glove if I’ve got that right. Definitely worth purchasing for cold weather runs.
I love the Runderwear Running Base Layer and now have four of them. They are comfortable to wear, look stylish and function perfectly. The integrated mitts are perfect for cold or fresh morning runs.
Hey Simon,
Great to hear that you are loving your Runderwear Base Layer and love how comfortable it feels when on. The mitts are a favourite for the team too and perfect for those colder morning runs!! Happy Running.
Excellent fit and feel, great base layer for the chilly Scottish winter runs. Or just Scottish runs to be fair!
Hey Mike,
Thanks for your feedback, Great to hear that you are loving your Base Layer and its been perfect for those colder runs. Happy Running!
Great addition to my winter running kit, love the extended arms with fold over mitten ends
Hey Neil,
Thanks for your feedback, Great to hear that you are loving your Base Layer and its been a great addition to your winter running kit. The mittens are a favourite feature for me too on those colder mornings. Happy Running!
Highlighted recommend!
Great running kit for winter as base layer and for spring on them own
Absolutely love it!
I will race in it on my half marathon tomorrow 👌
Hey Artur,
Thanks for your feedback, Great to hear that you are loving your Base Layer and would highly recommend. We hope your Half marathon went well wearing your Base Layer.
Happy Running!
Thought the T-shirt base layer was great; so took a punt on this - surpassed expectations! Didn’t think that the hand covers were any use until I needed them on a chilly run where I’d forgotten gloves. Would like to see thumb loops in a future iteration if feasible.
Hey Mark,
Thanks for your feedback, Great to hear that you are loving your Men's Base Layer and it surpassed your expectations. The Hand mittens are a favourite feature of mine too especially on those colder runs! I will be sure to pass your feedback onto the team in regards to thumb holes in the product.
I'm really happy with base layer.
I like the material and it does a great job keeping me warm when running in the winter (the only warmer one I have is merino wool and even more expensive). The cut is cut pretty slim, which I prefer in a base layer (plus material seems quite stretchy). I did find the very long arms a little bit strange at first, but this is by design and when I forgot gloves on a cold day it was harder to just be able to roll sleeves down. Also really like the that seams are all really smooth to avoid any chafing on those long Sunday runs.
The only thing i'd changing (and stopping it being a 5 star review) is that I wish it was a little longer in the body. I'm 5 ft 10 and found the medium just a little bit short, although not enough to make me regret my purchase.
Fantastic product with great attention to detail. Worn a few times and feels great. Care label printed in hem rather than sticking out inside garment. Highly recommend this for comfort and quality.
I love the Runderwear products hence this isn’t a one star review but I’m being asked to review a product I haven’t received?
Ordered over two weeks ago?
Great purchase and good fitting both length and width. And very warm as well. A great purchase
Husband said it was the best base layer
Have generally used Skins compression tops previously as a base layer, but took advantage of the Blsck Friday sales and bought one from Runderwear (not sure I would have bought it at full price). Runderwear top is a thicker fabric/material than the Skins one with less ‘compression’. The Runderwear top is definitely helping in the recent cold weather but isn’t as comfortable as the Skins one, both on its fit & the fabric used.
Love this top
Unfortunately the parcel was attempted to be delivered to the wrong address by Evri. The driver even took a picture of the wrong house on the tracking system. Evri have made no attempts to redeliver during the subsequent 2 weeks and I’m now awaiting a replacement parcel
Took advantage of Black Friday so very pleased with my purchase. I bought this at the best time as the temperature has plummeted. So comfortable and warm
Fab product. The integrated gloves are just brilliant. No risk of losing gloves when the hands are too hot and gloves removed. The base layer feels warm when first put on. I liked this base layer I bought another one
Items not arrived after two weeks despite being told they were dispatched!
Took advantage of Black Friday sale. Good quality item.
Up until now I have been mostly using Under Armour base layers and have no complaints. The Runderwear ones are different in that they are not compression tops. I have used for a few early morning London winter runs and found them to be comfortable and warm.